Noiseless stop for doors



- T. E. WELSH NOISE-LESS $10? FOR nooas Filed Oct. 14. 1921 INVENTOR Patented Apr. 6, 1926.

U t TE NOISELESS STOP FOR DOORS.

Application filed October 14, 1921. Serial No. 507,659.

To all who-m it may concern:

Be it known that I, THOMAS E. TELSH, a citizen of the United States, residing at Woodbridge, in the'town of New Haven and State of Connecticut, have invented a new and useful 'NoiselessStop for Doors, of which the following is a specification.

My invention relates to devices for preventing the slamming of doors that are hinged, and are closed by springs or othei mechanical means. Of these I know of only two types. One type depends upon an air, or oil, piston to prevent the door from closing swiftly. It screen doors; which should close swiftly to keep insects from entering. It is also e2;- pensive. The other type is suitable for screen doors only; for it depends upon the centrifugal force of the closing doors to swing a rubber ball outwardly so that it strikes the door jamb and acts as a buffer for door. When the door is opened only about half way or less, as a door often is opened by children and dogs, and allowed to shut, the centrifugal force is insufficient to swing the rubber buffer, and the door slams. The objects of my improvement are to provide an inexpensive device that may be effectively applied to all swinging, and many sliding, doors; whether they are closed slowly or swiftly, by mechanical means or by hand.

I attain these objects by the mechanism illustrated in the accompanying drawing in which Figure 1 is an elevation showing the device attached to the inner side of a door jamb, that is, the observer is supposed to be standing in a door way and with his back to the door hinges.

Figure 2 is an end view of the device.

Similar numerals refer to similar parts throughout the several views.

I prefer to make the entire device of steel with the exception of chain 6, and ball 7. Pin 1 is driven tightly into rod 2, which slides horizontally within casing 3. Casing 8 has two flanges 4, by which it is attached to a door jamb by screws as shown. Helical spring 5 is compressed so that it continually pushes rod 2 towards the door; the motion of rod 2 in this direction being limited by the pin 1 striking against the end of the helical slot shown through casing 3. Fastened to the upper end of pin 1 is a chain, or cord, 6. I prefer a light chain of is therefore unsuitable for brass. To the lower end of chain 6 is attached a rubber ball '7. Block 8 is also screwed to jamb, and serves as a back stop for ball 7 when it is struck by plate 9 attached to door. Striker 10 is driven into door, and serves to push rod 2 away from door when door is finishing its closing move ment. The solid lines in drawing show the position of all parts of the device, when the door is open two degrees or more. In operation, as the door about to close, the striker 10 pushes rod 2; which is compelled by the helical slot in casing 3 to revolve until top of pin 1 is further from door jamb than is the outermost surface of block 8, and assumes the position in which it is shown by dotted lines in Figure 2. This change of position of pin 1 and rod 2 is accomplished so quickly, that ball 7 has not enough time to move from in front of block 8 before being struck by plate 0 on door. The door rebounds enough to allow pin 1 and rod 2 to take up their former positions, or nearly so. After rebounding one or more times, the door approaches ball 7 so slowly that the ball 7 has time to swing out of the pathway of door, and into the position it is shown by dotted lines in Figure 2. The striker 10 then continues to push the rod 2 until pin 1, rod 2, chain 6, and ball 7 are held in the positions shown by dotted lines in Figure 1; and the door is completely shut. When the door is opened the rod 2 is pushed forward by the spring 55, carrying with it the pin 1, which is turned upward by the slot in casing 3. Chain 6 and ball 7 follow until all parts have reached the positions shown in Figure 1 and Figure 2 by solid lines.

I claim:

1. In a door check with a bumper suspended from a suitable support, a member for guiding the means of suspension so that said bumper is swung out of the pathway of the door after the door has been temporarily checked.

2. In a door check, with a bumper suspended by a flexible member from a suitable support attached to the inner casing of a door frame, means for guiding said bumper so that said bumper is swung out of the pathway of a closing door after said door has been temporarily checked.

3. In a door check, a bumper suspended so as to prevent the shutting of a door, a suitable support for the bumper suspending means attached to the inner casing of a door-"frame, and a member for guiding said bumper so that said bumper does not prevent said door from shutting.

i. In a door check a bumpersupported so that when free said bumper is not in the pathway of the door, and a member for forcing said bumper into the pathway of door immediately after the door is opened.

5. In a door check, a bumper suitably suspended out of the pathway of the door, and a member for deflecting the suspending means so that said bumper is held in the pathwa of the door until the door strikes said deflecting member.

(3. In a door check, a bumper, a suitable support attached to a door trame, means for attaching said bumper to said support, a suitable backing for restraining said bumper, and a member for causing said bumper to move sidewise and backward so as to avoid said backing.

T. In a door check, a bumper a suitable support attached to a door frame, means for attaching said bumper to said support, and a member for moving said bumper sidewise and backward as compared with the direction a door mores immediately before it shuts.

THOMAS \YICLSH. 

